Coating composition comprising autoxidisable component

A coating composition that comprises an autoxidisable vinyl polymer, said composition being selected from the group consisting of aqueous coating compositions and solvent-based coating compositions, wherein

• I) said autoxidisable vinyl polymer has:
• i) vinyl polymer backbone in an amount from 25% to 75% by weight of said autoxidisable vinyl polymer;
• ii) fatty acid residue in an amount from 25% to 75% by weight of said autoxidisable vinyl polymer;
• iii) a Tg from −60° C. to +20° C.,
• iv) a weight average molecular weight (Mw) from 3,500 to 50,000 g/mol;
• and
• v) a PDi from 2 to 10;
• wherein
• II) said autoxidisable vinyl polymer is obtained by a process comprising the steps of:
• (A) polymerising ethylenically unsaturated vinyl monomers comprising:
• i) at least one epoxy functional vinyl monomer in an amount from 15% to 100% by weight of the total monomers in step (A);
• and
• ii) at least one other ethylenically unsaturated vinyl monomer in an amount from 0% to 85% by weight of the total monomers in step (A);
• to obtain an epoxy functional vinyl polymer, and
• (B) reacting said epoxy functional vinyl polymer obtained in step (A) with fatty acids having an average iodine value from 30 to 250 g I2/100 g fatty acid;
• wherein
• III) said composition has:
• a) optionally a co-solvent content less than or equal to 40% by total weight of said composition;
• 1) a solids content when aqueous of greater than or equal to 30% by total weight of said aqueous composition;
• and
• 2) a solids content when solvent-based of greater than or equal to 60% by total weight of said solvent-based composition;
• and wherein
• IV) said composition when in the form of a film has a telegraphing value of less than 10 gloss units, where the telegraphing value is a difference between an initial smooth gloss value minus an initial rough gloss value of the film, where
• the initial smooth gloss value is the gloss when the film is cast on smooth PVC (Rz=1 μm [±0.25 μm]);
• the initial rough gloss value is the gloss when the film is cast on rough PVC (Rz=25 microns [μm] [±5 μm]);
• and where
• the film has a dry film thickness of 52 μm [±6 μm];
• and
• the initial gloss value is measured at a 20° angle, one day (24 hours) after the film has been cast.